You may see your Net Cost Basis and Net Proceeds on the Form 8949 and be alarmed by how large these numbers are - but do not worry! Your total basis and total proceeds shown on your Form 8949 are the sums of basis and proceeds across every taxable trade of your crypto. These totals do not reflect how much USD or other FIAT currency you own, and DO NOT reflect your capital gains; they more reflect the volume you traded in a given tax year.
According to the IRS guidelines you are required to report total basis and total proceeds on every transactions you make, which is where that high number of proceeds/basis is coming from. However, only the total gain or loss amount shown on our website (and in Column H on the 8949) is used in the calculation of your taxable income. For example, if you buy bitcoin at $40k and sell at $41k, and you do this 10 times in a single year, you will have $10k of gain when you only traded with an account balance ranging from $40k-$50k. But on your tax return, you will report a total basis of $400k and total proceeds of $410k - because you add up the basis and proceeds from all of your trades.
In this scenario, there were only 10 trades. You can see that a high trade volume would drive up the basis and proceed numbers quite a bit. This is not something that is wrong with your report. It is simply how the numbers have to be reported according to the IRS.